Improvement in boring-machine



" "fl'o all whom it Quay/concern.' y l Be ,it known thatIwe, WILsoN W,lG'AnuY and l GEORGE W. HARRIS, of` Lowell, in the county of' Midldlesex andState of Massachusetts, have invented new canta (salleswinsovw.;OAREYAND G oncnw; HARRIS, orLow'nmgA MASSACHUSETTS.

1 Lette/rs Patent No. 106,120, dated August 9, l1870.

.IMPROVEMENT IN BORING-MACHINE.

` fl'lie 4Slzahec'inle referred. to in these Letters Patent and makingpart of the sme and useful Improvements inpBol-ing-liIaC-hines; and wedo` hereby declare that the followingis a full and exact descriptionthereof, reference' being had 'to 'the accompanyingdrawings and to theletters of refer encemarked-thereon.

The nature of orinvention consists in First,providinga-boring-niachinewith an adjustar ble table havinga pivoted, gaugefbar, a slide, and

clamp-screw, as described. l

" #l 'Secondyin the i device for adjusting and operating theperpelulicularfand" horizontal bits ota boringff llfigure `1'representsajside elevation ofonr improved- Y boring-machine.

' AFigure 2 -reprcsentsa plan: of the same.

Figure 3 representsa front'elevation of the same.

Fgurc4 represents aside elevationof the same,`

adjustable head-stools, j

Similar letters iu thedilferent figures indicate correspondingparts'.

We constrnct;the frameoi .our improved boring-` l with parts brokendnt,showing the operation of the machine of suitable end-pieces act,which are provided with` -boxes :andthe requisite caps, through and 1n`which Vthe driving-shaft?) revolves.

These end-pieces agafare` secured 'together bythe gir-ts b b and c, thegirt cforming the top of the frame, which is iinished` olf trueandsmooth, and provided with a suitable slot on fand in which theadjustable head-stock c' slides and-rests, the bottom 4side of `whichbeing finished'to .correspond with thctop of j the frame.

Through the bottom of the 4head-stock c' a suitable stud, g, passes,which is provided with awheel, f', and pinon f, this pinion gearing intothe rack c', which is secured to the under side of the girt c.

By this 'devicethe heini-stock c' is adjusted as de sired. When thehead-stockctis required t-o be used permanent, it is secured tot-hegirtcby suitable bolts or screwk. l U l Between the end-pieces c a, ofthe fraine, and se- `cured to the driving-shaft 11,"is the adjustablepulley d, which is adjusted andysecured in the required'loc-ation bymeans of a set-screw. l v

Outside fof the frame, and secured to the driving'- shal't are Ythetight and loose pulleys d and e, 'from which rnot-iou is imparted to theentire machine. Passing through the head-stock c', and running 1n thebearings whichare located vthe 'required distance from the to'p of theframe, is the horizontal shalt g', one end of which is supplied witlrasuitable device torV 'stock' c in the desired location.

Between the guide h and the adjustable head-stock I. vc', and sliding onthe shaft g', is the/pulley It', which connects with 'the adjustablepulley d by'a belt, and is provided with a suitable spline, which issecured to tl1e`sa| ne,`this spline sliding inthe slot in the shaft g',

this adjustablehead-stock c' being constructed 'of the required jsizeand shape, inthe front of. which, .at a suitable distance apart, isprovided with boxes, which Y form bearings for'the upright orperpendicular shaft t', on one end of which is'fornied asuitable devicefor the purpose otholdingV the bit, the other end being `secnredto theswinging lever t" by a socket bearing.

` ,Between thebearings, and running on'the shal'ti,

`is `the pulley which connects with the adjustable 'pulleyd by asuitable belt, which passesover the' binders jj', whichvare secured tothe adjustable head- This pulleyjl is provided with a spline, whichslides in the slotmade in theshaft'i.-` g

Located between the topbearngand'swinging lever t', on the shaft '5,'is' the adjustable collar la', which regulates the depth of the hole tobe bored, more or less.

Vl is'an arm, which is pivoted'to the adjustable headstock c' at oneend, the other end connecting with and hingiug tothe swinging lever i. p-Between this arm lanci adj ustablev head-stock c' is the slotted guideZ', in 4and through which the lever 'i' moves. l

On thetop oi'. this lever i', each side of the guide l',

are thenotches m and m', which keep therod u in its required positionwhen in operation, the rod nbeing placedin the notch m" when thehorizontalbit is used-and' in the notch m' when the perpendicular bit.is used, 4this rod a connecting with the foot-treadle s',

which'is hinged at the bot-tom to ,the Aback part'ot' the frame.

n' n are elbows, which are secured to the frame, and connect with thestrap o and o', the strap o connecting with the guide h, the strap oconnecting with the spring seat p, through which the rod p' passes, andis connected to the swinging strap g at the bottom, the other endpassing through-the swinging lever-t, the

strap q being pivoted to the girt c on both sides, the

spring seat p being connected to the lever t" by suitable rods q q'.

i r is an adjustable' collar, which slides on the rod p',

regulating the tension ofthe spring r', which is placed on the rod p',between the collar r-and spring seat p.

s ls areadjustable rods used when operating the np- `right bit for'keeping the work in its required place.

tisthe adjustable table, which is raised and descrew o' and circularslot c.

rBhe boring-machinebeing thus constructed-and arranged, and its severalparts adjusted in position, is then ready for use.

For upright boring or using the uprightbit, the` operator disconnectsthe strapsel o' from the spring seat 1), places the wood to be bored onthe table t', between therest a and the ways w, securing the same to thetable t by sliding down the adjustable rods s s, and securing the saineby aid of the thnn'lh-scrcws, thus holding down the piece of ywood to.he bored.

Power is then applied to the tight pulley ll', which communicates motionto the pulley j bythe belt passing over the-.binders jj around the adjnstable pulley d;

The upright bit being in motion, the operator, with Y his foot, presses'down the freadle s, which depresses lcan be bored ou this line parallelwith the front ofthe table t,

,When the holes come irregular, or more than this one line, whichcornesdirectly in under the bit, by operating the wheel f', aided by thepinion f, which v the notch my into the notch m.

gears into the rack c', the adjustable bead-stock c is adjusted back orforth at will. At the same'- time the adjustable pulley d canl beadjusted as desired, and secured by a'setscrew. This adjustablehead-stock c' can be secured, if required, bythe screw k, thus bringingthe bit over any point desired.

For horizontal boring, the straps of o are connected to the spring seatjp, and the shaft 'i is disconnected from the swinging lever i', and therod n is slid from rfhe adjustable rods s s are elevated and secured.The piece to be bored is placed on the table t, between the rest u andways w, the rest being firmly secured by the thumb-screw c, thussecuring the piece to be bored in its desired location. rlhen the sameoperation is required to bore horizontally as in upright boring.

When holes are to be bored angular, the rest u' is turned on its-pivot,bringing the wood to its required angle, and firmly secured by thethumb-screw c.

'lhns it will 'be seen vthat upright, horizontal, and angular boring canbe accomplished by this one maf chine, where heretofore it has taken twodistinct ruachines. Also, the adjustable head-stocke' can be pewlnancntly secured to the frame, or adjusted nicely and accurately, asrequired, so as to bringthe upright bit over any point desired That weclaim as our invention, and desire to secure by Letters Patent, is

1. The arrangement ot' the siide u, the pivoted gauge-bar a',clamp-screw fv, and table t,'in the manner and for the purpose shown anddescribed.

2. The levcr i', arm l, `rod 4)', spring seat up, spring r', rods q q',adjustable collar r, iucombination with y the arbor i, rods n n', andfootderer s', all constructed and arranged as described, for thepurposes specified.

WILSON NV. CAREY. GEO. XV. ARRIS.

W ituesses W. W. GLADNER, Guo. E. PEVEY.

